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SiUS12-928_B
Code Indication on Remote Controller
Service Diagnosis
144
4. Code Indication on Remote Controller
4.1
Indoor Unit
Error Codes
Description
Reference Page
00
Normal condition
—
A1
Indoor unit PCB abnormality
146
A5
Freeze-up protection control or heating peak-cut control
148
A6
Fan motor or related abnormality
DC motor (CTXS/FTXS series)
150
AC motor (CDXS/FDXS series)
152
C4
Indoor heat exchanger thermistor or related abnormality
153
C9
Room temperature thermistor or related abnormality
153
U4
Signal transmission error (between indoor unit and outdoor unit)
154
UA
Unspecified voltage (between indoor unit and outdoor unit)
155